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Homework Help: Kilogram force and newtons?

  1. Jun 26, 2010 #1
    how do i convert a mass in kilograms to a weight in kgf??
    should it not just be the same value?? is that not the idea of kgf??

    for a weight on earth

    if F=mg---> N=kg*9.8

    and i know that


    giving me 1kgf=9.82Kg

    this doesnt seem right to me,
    can someone please explain it, thanks
  2. jcsd
  3. Jun 26, 2010 #2


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    Staff: Mentor

    No. More like F=9.8N, or N=F/9.8.
  4. Jun 26, 2010 #3
    how so, that is my whole problem,

    if F=mg for example and

    F is Newtons
    m is Kg
    g=9.8 m/s2

    then Newtons=Kg*9.8

    why is this incorrect??
  5. Jun 26, 2010 #4


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    Staff Emeritus
    Science Advisor
    Homework Helper
    Education Advisor

    Here's your mistake. A Newton is the force required to accelerate 1 kg at 1 m/s2, not 9.8 m/s2.
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